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<!DOCTYPE html> <html> <body> <p>Click the button to check the encoding of this document</p> <button onclick="myFunction()">Try it</button> <p><strong>Note:</strong> Internet explorer 8 and earlier does not support the inputEncoding property.</p> <p id="demo"></p> <script> function myFunction() { var x = document.inputEncoding; document.getElementById("demo").innerHTML = x; } </script> </body> </html>